docs: def is_alive(self):
          """
          Test Function to check WHAT IF servers are up and running.
          """
          
          u = urllib.urlopen("http://wiws.cmbi.ru.nl/rest/TestEmpty/id/1crn/")
          x = xml.dom.minidom.parse(u)
          self.alive = len(x.getElementsByTagName("TestEmptyResponse"))
  
          return self.alive